bob.cpp

// Copyright [2016] <Gergely Brautigam>
#include "./bob.h"
#include <boost/algorithm/string.hpp>
#include <string>

std::string bob::hey(std::string text) {
    boost::trim_right(text);
    if (text.empty()) {
        return "Fine. Be that way!";
    }
    if (text == boost::to_upper_copy<std::string>(text)
        && text != boost::to_lower_copy<std::string>(text))
        return "Whoa, chill out!";
    else if (text.back() == '?')
        return "Sure.";
    else
        return "Whatever.";
}

bob.h

#ifndef BOB_H
#define BOB_H
#define EXERCISM_RUN_ALL_TESTS
#include <string>

namespace bob {
  std::string hey(std::string text);
}

#endif  // BOB_H